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He looked contemplative as Robson, who portrays Police Inspector Geordie Keating, chatted to him about the latest happenings in the Cambridgeshire village.

Looking every inch the detective, he wore a double-breasted, three-piece suit and a large overcoat, and carried a brown hat.

Police disturbance: As James and Robson filmed their scenes, local police handcuffed a man standing just yards away from the set

In character: Hoping to re-create the 50s, James wore a vintage vicar's outfit, while Robson wore a three-piece, double-breasted suit with a large overcoat

Grantchester is a small-screen adaptation of crime-fiction book series The Grantchester Mysteries by James Runcie and the first series pulled in an average of 6.6 million viewers when it debuted in October 2014.

The final episode saw Geordie shot on duty.

A year on, he appears to have put this behind him but underneath his carefree exterior there are new feelings of vulnerability, and this puts a strain on his relationship with wife Cathy and his friendship with Sidney.

The six new episodes are being filmed in London and Grantchester as well as in Cambridge's city centre.

A 90 minute Christmas Special will also be broadcast later this year.

Victoria Fea, ITV’s Controller of Drama, commented: 'Viewers have really taken Grantchester to their hearts. We’re really excited to commission not only a third series, but also a Christmas special.

'The village of Grantchester is always beautiful, but to add a festive touch will be absolutely wonderful!'